Crevice corrosion-resistant liquid-cooled armature bar clip-to-strand connection and related method
First Claim
Patent Images
1. A brazed joint between an armature bar strand package and an end fitting comprising:
- a plurality of solid strands and a plurality of hollow strands arranged in a tiered array and forming the strand package, said plurality of hollow strands having free ends that extend axially beyond corresponding free ends of said solid strands;
a cavity in the end fitting, said free ends of said plurality of hollow strands and said corresponding free ends of said solid strands extending through an opening in said end fitting and received in said cavity; and
an essentially phosphorous-free copper-silver braze alloy joining said free ends of said plurality of hollow strands and said corresponding free ends of said plurality of solid strands to each other and to interior surfaces of said end fitting.
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Abstract
A brazed joint between an armature bar strand package and an end fitting includes a plurality of strands arranged in a tiered array and forming the strand package; a cavity in the end fitting, free ends of the plurality of strands extending through the opening in the end fitting and received in the cavity; and an essentially phosphorous-free copper-silver braze alloy joining the free ends of the plurality of strands to each other and to interior surfaces of the end fitting.
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Citations
20 Claims
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1. A brazed joint between an armature bar strand package and an end fitting comprising:
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a plurality of solid strands and a plurality of hollow strands arranged in a tiered array and forming the strand package, said plurality of hollow strands having free ends that extend axially beyond corresponding free ends of said solid strands;
a cavity in the end fitting, said free ends of said plurality of hollow strands and said corresponding free ends of said solid strands extending through an opening in said end fitting and received in said cavity; and
an essentially phosphorous-free copper-silver braze alloy joining said free ends of said plurality of hollow strands and said corresponding free ends of said plurality of solid strands to each other and to interior surfaces of said end fitting. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A brazed joint between an armature bar and an end fitting comprising:
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a cavity in the end fitting, accessed by an opening;
an array of solid and hollow strands received in said opening and arranged in a tiered array; and
an essentially phosphorous-free, copper-silver braze alloy joining said solid and hollow strands to each other and to internal surfaces of said end fitting, said braze alloy covering free ends of said solid strands but leaving free ends of said hollow strands open and unobstructed. - View Dependent Claims (8, 9, 10, 11, 18)
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12. A method of forming a brazed joint between an armature bar and an end fitting comprising:
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a) locating ends of a plurality of hollow strands and a plurality of solid strands within a cavity in an end fitting such that free ends of said hollow strands extend axially beyond free ends of said solid strands; and
b) pre-placing an essentially phosphorous-free copper-silver braze alloy around and between said ends of said hollow strands and said solid strands such that said braze alloy does not extend axially beyond said free ends of said solid strands. - View Dependent Claims (13, 14, 15, 16, 17)
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19. A brazed joint between an armature bar strand package and an end fitting comprising:
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a plurality of strands arranged in a tiered array and forming the strand package;
a cavity in the end fitting, free ends of said plurality of strands extending through an opening in said end fitting and received in said cavity; and
an essentially phosphorous-free copper-silver braze alloy joining said free ends of said plurality of strands to each other and to interior surfaces of said end fitting. - View Dependent Claims (20)
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Specification